From 03f5abe7fa5f013a6095321c5f4ad97021f801d2 Mon Sep 17 00:00:00 2001 From: Dave Beckett Date: Sun, 13 Sep 2020 07:34:00 -0700 Subject: (raptor_avltree_delete_internal): Handle deleting empty tree. Fixes invalid pointer reference reported by Li Qiang via email. --- src/raptor_avltree.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/raptor_avltree.c b/src/raptor_avltree.c index 5059eaaf..4001a92b 100644 --- a/src/raptor_avltree.c +++ b/src/raptor_avltree.c @@ -779,7 +779,10 @@ raptor_avltree_delete_internal(raptor_avltree* tree, return rdata; } - cmp = tree->compare_handler((*node_pp)->data, p_data); + if(p_data) + cmp = tree->compare_handler((*node_pp)->data, p_data); + else + cmp = 0; if(cmp > 0) { RAPTOR_AVLTREE_DEBUG1("too high - scan left\n"); -- cgit v1.2.1